Thermo Electron SORVALL RC3BP, Operating Instructions Manual

Page: 31 / 64

3-14
Controls, Indicators, and Displays SORVALL

Centrifuges
municate to WatchLog Network™ (logging run data will
not occur), but the centrifuge should still be operational. If
programmed operation is desired, resave the run param-
eters, but leave the main power switch ON until the condi-
tion is repaired, so that saved programs are not lost.
NO ROTOR DETECTED
When START was pressed, a rapid increase in rpm was
detected (that could occur if no rotor was installed), and the
run was terminated immediately. After the door unlocks,
install a rotor and restart the run. If a rotor was installed,
check to be sure that it was correctly identified in the SET
display. If not, either change the rotor or change the setting
so that they match, then restart the run. If, however, a
correctly identified rotor
was installed, it indicates either
that the drive shaft is damaged or that a tachometer problem
exists. Remove all sample from the rotor, unplug the
centrifuge and contact
Thermo
Service. (WatchLog
Network™ record: incomplete, NO ROTOR.)
POWER FAILURE – RUN RESTARTED
A momentary power failure occurred during the run, and
the rotor speed was still within 200 rpm of SET speed when
the power was restored. The automatic restart feature re-
sumed the run in progress. (WatchLog Network™ does not
document this occurrence.)
POWER FAILURE – RUN TERMINATED
A power failure occurred during the run, and the rotor
speed was not within 200 rpm of SET speed when power
was restored, disabling automatic restart. The run in progress
was terminated. (If power is restored before rotor reaches
zero speed, WatchLog Network™ record: incomplete,
POWER FAIL. If power is restored after the rotor is at zero
speed, there will be no record of the run.)
ROTOR IMBALANCE – BALANCE ROTOR
Excessive rotor vibration was detected; the run in progress
was terminated. Rebalance the rotor according to directions
in the rotor instruction manual, then restart the run.
(WatchLog Network™ record: incomplete, IMBALANCE.)
SAMPLE OVERTEMP – PRE-COOLING
The RUN display temperature was more than 2
°
C above the
SET temperature either when START was pressed, or dur-
ing a STEP RUN at a moment when the programmed SET
temperature changed. Press CLEAR to continue the run as a
Precool run, or press STOP to terminate the run to remove
sample before precooling the chamber to SET temperature.
During a Precool run, P-COOL replaces the DEG C field
header in the SET display until RUN temperature is within
2
°
C of SET value.